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Finding the Fourth Proportional to 537.72, 742.10 and 313.68

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Solution

The fourth proportional to 537.72, 742.10 and 313.68 is: 432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.72 : 742.10 = 313.68 : x
  2. Step 2: Convert to fraction form
    537.72/742.10 = 313.68/x
  3. Step 3: Cross multiply
    537.72x = 742.10 × 313.68
  4. Step 4: Simplify right side
    537.72x = 232,781.93
  5. Step 5: Solve for x
    x = 232,781.93/537.72
  6. Step 6: Final answer
    x = 432.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.